136589 has 4 divisors (see below), whose sum is σ = 137724. Its totient is φ = 135456.

The previous prime is 136573. The next prime is 136601. The reversal of 136589 is 985631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 100489 + 36100 = 317^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 136589 - 2⁴ = 136573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136589.

It is not an unprimeable number, because it can be changed into a prime (136519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362 + ... + 635.

It is an arithmetic number, because the mean of its divisors is an integer number (34431).

2¹³⁶⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

136589 is a deficient number, since it is larger than the sum of its proper divisors (1135).

136589 is an equidigital number, since it uses as much as digits as its factorization.

136589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134.

The product of its digits is 6480, while the sum is 32.

The square root of 136589 is about 369.5794907730. The cubic root of 136589 is about 51.4997643499.

The spelling of 136589 in words is "one hundred thirty-six thousand, five hundred eighty-nine".